<div class="col-sm-2">
    <a href="#" class="list-group-item ">商品管理</a>
    <a href="/product" class="list-group-item" id="products-list">商品列表</a>
    <a href="/product/add" class="list-group-item" id="add-product">增加商品</a>
    <a href="/product/edit" class="list-group-item" id="edit-product">编辑商品</a>
    <a href="#" class="list-group-item ">分类管理</a>
    <a href="#" class="list-group-item">商品分类列表</a>
    <a href="#" class="list-group-item">增加商品分类</a>
</div>